The lip on this case sits even with the bottom of the caps rather than the plate. So, assuming the pok3r RGB uses the same mounting holes, the bottom your keycaps would just be a little above the lip of the case. Up to you to determine if that's fine with you, seems better to me than the plate sitting above the lip.

That said, this is speculation based on the profile of the case from someone who does not have a Pok3r RGB. Someone else might be able to provide additional details/confirmation?